Kiddushin 81b It's All in Your Mind - ולא ידע ואשם

Matmonim: Daf Yomi by Rabbi David Lapin - A podcast by Rabbi David Lapin

The power of imagination is strong: Imagination can create aveirot (transgressions) even where in reality there are none. Likewise, positive intention, even when unable to be acted upon, is transformative. Sources